Nut-lock.



- a. F. ousn. I NUT LOC K. APPLICATION FILED S EPT- IBI 1915.

1 ,272,988. Patented July 16, 1918.

III III 4 s'ra'r is @PATE GEORGEIE. oLIsH, or MINNEAPO IS, MrnivEsorA; BETEB, s. onrsrr nxncuron or SAID Y enonen r. omsmnncniesnn I Nor-noon.

Specification of Letters IP atent. iflyi'lfi,

appea in filcdfieptembcr 18, 1915- Seri-al at. 5 1,364,.

To all whom it may concern: 7

Be it known that I, GnoRGnF. OLrsH', a citizen of the United States, residing at Minneapolis, State of Minnesota, have invented certain new and useful Improvements in Nut-Locks, of which the following is a specification.

This invention relates to nut locks and has for its primary object to provide a device of this character which will allow for the free rotation of the nut at the same time will prevent the unthreading of the nut from the boltunless power is applied thereto.

Another object of this invention is to equip one of the members with a locking element which is adapted for frictional engagement with the opposite member so as to securely bind the same and prevent the un-- threading of the nut from the bolt, due to vibration or the like,-

A further object of the invention is to provide a device especially applicable on railways or the like where a certain amount of vibration is due from the rolling stock passing over the rails and is equipped with a locking element which is situated on the interior of, the nut so as to keep the same element and allowin the meeting end from view, thereby preventing train'wreckers or the like from picking. the locking s of the'rail to separate for throwing the train from the track.

Other objects as well as the nature, characteristic features and scope of my invention will be more readily understood from the following descrlption taken in connection with the accompanyingvdrawings and pointed out in the claim forming a part of this specification. Referring. to the drawings Figure 1 is a side showing my improved locking nut in section thereon;

Fig. 2 is a sectional view of the nut showing the locking element in space therein; 7 Fig. 3 is a cross sectional view' taken on the line 33 of Fig. 1; and

Fig. 4: is a detail perspective view of the locking element. 7v In the drawingswherein is shown the preferred form of my invention the numeral 5 represents a an ordinary externally screw threaded hank 6, which s adapted for engagement in the county of Hennepin and on the bolt and bearing 7 the bolt it is necessary to apply power elevation of the bolt.

bolt which is provided with advantages with the interior threaded bore 7 of the nut 8: The nutS" isof the usual form except "for" the chamber or recess 9 which is pos1- one side of the recess is provided with a releasing space 10 and the opposite side provided with a slightly cut-out portion 11 which is formed in the threaded bore of the nut.

'- The recess 9 is further provided with I recesses 12 which are adapted to receive the pintles 13 which are formed on the key 14. The key 14: is mounted in the chamber 9 and is held from movement in one direction therein, in view of the cut-out ortion or releasing space 10. It is therefore obvious that the nut is free to rotate in one direction. The key 14: has a plurality of teeth 15 formed on the one edge thereof which straddle'the thread 6 of the bolt 5. In use the nut 8 is threaded on the bolt 5' to the desired point, the key 14 riding freely over the thread 6 of the bolt 5, as the teeth 15 of the locking key 14: correspond to the thread 6 on the bolt and thereby allows for the free rotation of the nut on the same. When it is desired to remove the nut from thereto through the medium of a wrench or similar tool, so as to throw the teeth 15 of the locking key at right angles to the body thereof and into the recess 11 which is formed for this purpose. It will be readily seen that as soon as the nut has been turned for approximately one revolution on thebolt the teeth 16 willhave been turned into the recess or cut-out portion 11 so as to allow for the. free rotation or unthreading of the nut" from the bolt without mutilating the threads minor changes in detail of construction, proportion and arrangement of the parts may e made within the scope of the appendedclaim and without sacrificing any of the of my invention.

Having thus fully described my invenand that various tion, What I claim as new and desire to seoure by Letters Patent isL Inscombination with a nut and bolt, said nut having a recess therein opening through the bore of the nut a key mounted in the.

recess and extending into the bore of the nnt for, engagement, with the bolt, one wall of the recess'b'eing at'anangIetO a plane passing through the axis of the nut and the bottorn of the recess, the opposite all being pafallei to said plane; and merging into a Wall arranged at an opposite angle to said plane.

In testimony whereof I affix myj signature in presence of two itnesses. 4 GEORGE F OLISH. Witn esses: )5 G V GEO. L. TELLER, Lon O. BURKE.

Copies of th is patent may be obtained for five cents each, by adgiressing the Oommisgionei'ef latents;

Y .1 Washington,I).G i t 

